E-consults, which have become more common, increase access to subspecialty expertise
but can increase stress on primary care clinicians due to the administrative time
and clinical effort that they require.

A 78-year-old man is evaluated for palpitations, worsening fatigue, and exercise intolerance.
Two months ago, he was diagnosed with atrial flutter and subsequently underwent cardioversion
to normal sinus rhythm. Following a physical exam, lab studies, and an electrocardiogram,
what is the most appropriate treatment?

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